Melting equipment for melting and casting aluminum rods for aluminum profiles

Abstract

The invention discloses smelting equipment for fusion casting of an aluminum rod applied to an aluminum profile. The smelting equipment comprises a smelting furnace, a nitrogen blowing device, an aluminum rod casting device and an anti-oxidation spraying device. According to the smelting equipment, impurities can be discharged efficiently and completely; in an overall smelting process, nitrogen isused for protecting molten aluminum liquid, and formation of oxide layers inside the cast aluminum rod and on the surface of the cast aluminum rod is prevented; moreover, the nitrogen can apply pressure on the molten aluminum liquid so as to increase the flowing speed, and thus cohesion is prevented and the efficiency is improved; furthermore, the molten aluminum liquid enters an aluminum rod mold pipe from bottom to top so that the relatively light nitrogen is upwards extruded out, the nitrogen is hardly left at some holes and can be discharged completely, and the situation that the qualityof the aluminum rod is affected by air bubbles can be prevented; and furthermore, an anti-oxidation coating on the surface of the aluminum rod can realize anti-oxidation protection for the aluminum rod after casting, so the quality of an aluminum profile product is improved.

Description

technical field [0001] The invention relates to the field of aluminum rod melting and casting equipment, in particular to a melting equipment for melting and casting aluminum rods for aluminum profiles. Background technique [0002] The melting and casting process of aluminum rods is well known. For example, the Chinese invention patent CN201310538784.9 discloses a melting and casting process of aluminum rods. The process includes the following steps: S1, preparing aluminum ingots and auxiliary materials, and sequentially adding them to the melting furnace; Melting aluminum ingots and auxiliary materials at a temperature of 900°C to 970°C to obtain molten aluminum, the temperature of the molten aluminum is between 700°C and 760°C; S3, stirring and removing slag after the aluminum ingots are fully melted; S4 1. Refining by putting the refining agent into the duster and blowing in nitrogen gas. After refining, the temperature of the aluminum solution is between 730°C and 760°C...

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Problems solved by technology

[0003] This invention patent improves the efficiency of aluminum rod melting and casting, but the technical solution of this invention is similar to other aluminum rod melting and casting processes on the market. There are oxide layers formed inside and on the surface of the cast aluminum rod, because the oxide layer of the aluminum rod is relatively hard and difficult to Melting, when the aluminum rod is subsequently pressurized to process the aluminum profile, the oxide layer of the aluminum rod will increase the extrusion process requirements and affect the quality parameters of the aluminum profile such as purity, smoothness and strength as impurities

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